Chisel guard



Jan. 29, 1957 c. H. FORBES SEL GUARD CHI Filed March 14, 1955 w w 6 m 2F A 2 6 A .m. x F

. m1 1 5M w! A I rm 1 0V, 4 FN E (6 .1 M H e m g Pu Y B M Jan. 29, 1957c. H. FORBES 2,779,367

CHISEL GUARD Filed March 14, 1955 2 Sheets-Sheet 2 Clarence H. ForbesINVEX TOR.

WW 5m CHISEL GUARD Clarence H. Forbes, Salt Lake City, Utah ApplicationMarch 14, 1955, Serial No. 494,153 8 Claims. (Cl. 145-24 This inventionrelates generally to a chisel guard and more specifically provides newand useful improvements over the chisel guard illustrated in mycopending application, Serial No. 457,435, filed September 2t, 1954.

An object of the present invention is to provide a chisel guard forprotection of the cutting edge thereof when the chisel is not in use. I

Another object of the present invention is to provide a chisel guardthat may be easily attached to a chisel and securely retained thereonfor protecting the chisel when not in use and to protect the cuttingedge thereof from contact with other objects, such as tools or the like,when the chisel may be placed inla tool box or the like.

A further object of the present invention is to provide a chisel guardin the form of a channel-shaped member having an insert adjacent one endthtereof for receiving the cutting edge of the chisel in a notch thereintogether with means for securely locking the chisel guard on the chisel.

Yet another important object of the present invention is to provide achisel guard in conformance with the preceding objects in which theinsert for receiving the cutting or sharpened edge of the chisel isadjustably mounted in the channel-shaped member for receiving varioustypes and lengths of chisels.

Still another important feature of the present invention is itssimplicity of construction, utility with various types and sizes ofchisels, ease of attachment and detachment, its adaptation for itsspecific purposes and its relatively inexpensive manufacturing costs.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fullyhereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view of a chisel with the chisel guard of thepresent invention positioned thereon;

Figure 2 is an exploded group perspective showing the elements of thechisel guard of the present invention and showing the relationshipthereof;

Figure 3 is a longitudinal, vertical sectional view taken substantiallyupon a plane passing along section line 3-3 of Figure 1 showing theconstruction of the chisel guard and the relationship ofthe chiselthereto;

Figure 4 is a transverse, vertical sectional view of the chisel guard ofthe present invention with the chisel omitted therefrom and showing theentrance of the V-shaped notch for receiving the chisel;

Figure 5 is a perspective view with portions of the chisel guard beingbroken away showing a modified form of insert wherein the chisel guardmay be adapted to smaller chisels;

Figure 6 is alongitudinal, vertical sectional view taken substantiallyupon a plane passing along, section line 6-6 of Figure 5 showing theconstruction of the modified form of chisel guard; t

Figure 7 is a perspective view similar to Figure 1 showing a modifiedform of chisel guard of the present invention;

Figure 8 is a transverse, vertical sectional view taken substantiallyupon a plane passing along section line "nited States Patent 0 2,779,367Patented Jan. 29, 1957 8-8 of Figure 7 showing the details ofconstruction thereof;

Figure 9 is a perspective view showing another modified form of chiselguard of the present invention;

Figure 10 is a transverse, vertical sectional view taken substantiallyupon a plane passing along section line Ill-10 of Figure 9 showing theconstruction of the sliding plate mounted on the channel-shaped member;

Figure 11 is a transverse, vertical sectional view taken substantiallyupon a plane passing along section line 11-11 of Figure 9 showing thedetails of the end construction of the channel-shaped member forming thechisel guard;

Figure 12 is a perspective view showing a modified form of chiselwherein smaller chisels may be utilized in conjunction with the variouschisel guards; and

Figure 13 is a perspective view of a modified form of insert forreceiving various sizes of chisels.

Referring now specifically to the drawings, it will be seen that thenumeral 10 generally designates the chisel guard of the presentinventiontfor use in conjunction with a chisel generally designated bythe numeral 12 and including a handle 14, a shank 16, a blade 18 and acutting edge or sharpened end 20 remote from the handle 14.

The chisel guard 10 generally includes an elongated channel-shapedmember 22 having side flanges 24 and a central bight portion 26. Thebight portion 26 is provided with an elongated slot 28 for receiving: ascrew fastener 39 in longitudinally adjusted position for securing aninsert 32 which may be constructed of wood or plastic or any other softmaterial which will receive and protect the cutting edge 20 of thechisel 12.. The insert is provided with an aperture 34 for receiving thefastener 30 and one end of the insert 32 is provided with a V-shapednotch 36 extending inwardly, and the lower leg of the notch is providedwith an inclined upper surface 38 which forms a guide for the insertionof the cutting edge 20 of the chisel 12 into the chisel guard It), andmore specifically, into the V-shaped notch 36. The end of thechannel-shaped member 22. remote from the insert 32 is provided withinturned side flanges 40 which terminate in concave edges 42 forengaging and gripping the shank 16 of the chisel 12. Due to the inherentresiliency of the material from which the channel-shaped member 22 isconstructed, the flanges 40 will frictionally retain the chisel 12within the channel-shaped member 22. Also, it will be understood thatthe angular relation of the inturned flanges 40 may be varied forreceiving and clampingly gripping chisels having various sized shanks16.

Slidably received on and encircling the channel member 22 is a closedloop or strap generally designated by the numeral 44 and including acentral opening an equal in cross-sectional area to the cross-sectionalarea of the channel-shaped member 22 for longitudinal sliding move mentthereon. The loop 44 is closed by a reverse bent crimp 48 wherein theloop 44 may be positioned in encircling relation to the channel member22 and the end of the blade 18 adjacent the shank 16 of the chisel Thebight portion 26 of the channel member 22 is provided with a springdetent 50 adjacent the end thereof together with a depending portion 52on the end thereot' for locating the loop 44 in relation to the channelmember 22 for assuring that the loop 44 will retain the chisel 2 in thechannel member 22, thereby retaining the chisel guard 10 on the chisel12.

Figures 5 and 6 illustrate a modified form of insert 54 wherein thefront edge thereof is provided with an inwar-dly extending bore 56formed by side members 58 wherein the bore 56 will receive a chiselhaving a relatively small blade and cutting edge. The side members 58form afour-"sided bore 56 for protecting the cutting edge of thechisel'on all sides. The insert 54 is also provided with a forwardly andoutwardly extending lower leg 6% having an inclined upper surfaceforming a guide for the inwardly extending bore 56-that a1so:haa-downwardly sloping top wall wherein the bore 56 is generally.'-shaped, as shown in Figure 6.

Referring now specific-allyto Figures 7 and 8,-it'will be seen that thenumeral '62 generally designates a modified form of chisel. guard thepresent invention wherein the channel-shaped *m'ember is provided withspaced hinge barrel membcr do on one edge thereof for pivotallyreceiving a closure member '68 having a hinge barrel Fil on edgetheszeof and ahinge pin '72 extending through the hinge barrels 66 and"79 when they are aligned, thereby pi-vo'tally securing the closuremember till to the channel-shaped member 6 Theedgeof the member asremote from the hinge barrel '70 is pro vided with depending lip il-having a concave recess 76 lllui'fiifi for spring engagcmcnt-with'aprojecting longitudinal tie-tent 37.8 on the edge of =the channel-shapedmember 64 remote from the hinge barrel 66. Dther than the structurespecifically set forth above, the chiselguard 62 is identical. inconstruction to the chisel guard 10 as illustrated in Figures 1-4.

Referring specifically .tO Figures 9-11, it will be seen that thenumeral fill generallytdesignates another modilied form or". chiselguard ofthepresent invention including an elongated channel-sl'lapedmember 82 having outturned edg ti l .on upper ends of the side flangesthereof for slidably receiving an elongated .cl-osure plate 86 havinginturned side edges 88 in sliding engagement with and-receiving theoutturned edges 84 of thechannel member 82- The siclcfianges of thechannel .mernber are provided with inturned flanges 90 having straightside walls 92.2 for receiving the shank .16 of the chisel 12 wherein theciosureplatefi retains the chisel 12 in positi on.

Figure 12 shows a modified form of chisel 94 having a small shank 6Witha sharpened beveled cutting edge together withsemi-cylindricalprojections 109 on the shank 96 which form abutments'forpositioning behind the flanges the channel-shaped member. Inasmuch asthe inserts in each may be longitudinally adjusted, it will be seen thatthe chisel guards of the present invention may be utilized with. varioustypes and sizes of chisels wherein after adjustment, they may be easilyandquickly assembled onto thechisels for protecting the cutting edgesthereof during the itime when the chisels are not in use andaccidentally engage other tools or objects that would tend to dull thecutting edge thereof. The chisel guards may be constructed of readilyobtainable material, and the inserts should be wood, plastic or similarsoft material for protectingthe cutting edge.

Figure 13 shows a modified form of insert 10.2 of twopiece constructionthat may be assembled by use of a fastener RM. 'The lower leg 1M oftheinsert 1 52 is constructed of plastic and the upper portion of theinsert is provided with an inclined end wall M8 having aconcave surfacewhereby variou sizes of chiselsinay be guarded by a single chisel guard.

The foreg-cing'is con's'ideredas illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur .to those skilled in the art, it is not desired tolitnliirthe invention to the exact. construction and operation shown anddescribed, and accordingly, all suitable modifications and equivalentsmay be resorted to, falling within thescope of the appended claims.

What is claimed as new is as follows:

l A chisel guard comprising elongated channelshaprd member adapted toreceive .a chisel, mean in said incmber'for receiving and protecting thesharpened end of the chisel, and locking means securing thechisel insaidmember, .said channeleshaped member having inturned-for-engageme11t-With the shank of the chisel for retaining the chiselin said member.

2. A chisel guard comprising an elongated channelshaped member adaptedto receive a chisel, means in said member for receiving and protectingthe sharpened end of the chisel, and locking means securing the chiselin said member, said channel-shaped member having inturned flanges atone end thereof forming a restricted opening for engagement with theshank of the chisel for retaining the chisel in said member, saidinturned flanges terminating with concave edges for gripping oppositeperipheral surfaces of the shank of the chisel.

3. A chisel guard comprising an elongated channelshaped member adaptedto receive a chisel, means in said member for receiving and protectingthe sharpened end of the chisel, and locking means securing the chiselin said member, said means for receiving the sharpened end of the chiselcomprising an insert of soft material, said insert having an inwardlyextending 'V-shaped notch in one end thereof for receiving and generallyconforming to the sharpened end-of the chisel.

A chisel guard comprising an elongated channelshaped member adapted toreceive chisel, ,means in said member *for receiving and protecting thesharpened end of the chisel, and locking means securing the chisel insaid member, saidxmeans for receiving the sharpened end of the chiselcomprising an insert of sort material, said inserthavinganinward'lyextending V shapednotch in one end thereof'for receiving and generallyconforming to the sharpened end'of the chisel, the lower leg of theV-shaped notch extending outwardly and having a tapered upper surfacefor forming a guide for the sharpened end of the chisel.

5. .Achisel "guard comprising an elongated channelshaped memberadaptedto receive a chiseL-means' in said member-for receivingandtprotecting the sharpened end of the chisel, and locking meanssecuring the chisel-in said member, said lockingmeans including alongitudinally slidableloop mounted: on said channel member formoveinentinto encircling engagement with the chisel and channel member, andmeans.releasablylocking said loop in adjusted position.

.6. .The combinationof claim 4 wherein -.saidloeking means includes aclosuremember pivotally attached-to one edge. of said channelshape-dinemben'and latch means releasablyretairiing;the.closure memberin overlying relation tothe chisel positioned in saidchannel member.

7. The combination of claim 4 wherein said locking means includes anelongated plate slidably mounted on said channel.shapedxmember, said,plate having inturned edges for .slidably. interconnecting withoutwardlyextending flanges on said channel member.

8. A chisel-guard comprising an elongated channelshaped memberadaptedztoreceiveachisel, means, in said member for receiving andprotecting: the sharpened end of the chisel, and .locklng;mea-nssecuring thev chiselin said member, said channel-shaped member havinginturned flanges at oneiend the eofiorminga restricted opening forengagement with the shank of the .chisel forretaining the chisel insaidmeinber, said'meansfor receiving the sharpened end of theichiselcoinprising an insert mounted in said channel-shaped;member forlongitudinal adjustment, said insertliaising-constructed:ofitwo pieceswith the juncture of the pieces forming a notch for receiving thesharpened end of the chisel.

ReferencesCited inthe file'of this patent U NITED STATES PATEN T S723,387 'Mattley .Dec. 13, 1910 1,109,044 Conti Septl, 191.4

"2,053,707 Farmer Sept. 8,1936

FOREIGN PATENTS 113,784 Sweden Apr. 10,.1945

